Numerical study on ignition of supersonic combustion fueled by partly catalyzed kerosene
The supersonic combustion of partly catalyzed kerosene was numerically investigated in this paper. The objective is to test whether the two present ignition model can successfully initiate the chemical reactions in the combustion. Implicit LU scheme and upwind TVD scheme was used to solve the fully Navier-Stokes equations of multi-species mixture. Chemical source term was treated implicitly to avoid stiffness. 10 species/10 steps model was used to describe the chemical reaction of C2H4/O2/N2 system. The contours of pressure, temperature, and species mass fraction were numerically obtained, as well as the static pressure distribution along the walls. The results indicate that the combustion is successfully initiated. The pressure downstream the fuel strut rises continuously due to fuel air combustion. Species CO is the important interim product and species CO2 and H2O are the two distinguished combustion products. Also, the net thrust can be numerically obtained for the strut and cavity in this combustor.
KeywordsFuel Injector Symmetrical Plane Static Pressure Distribution Supersonic Combustion Cavity Floor
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